You Can't Have an Ero Trap Dungeon Without Tentacles
One way or another, the dungeon reinforcements continued.
I asked Lufo for another catalog so I could hunt down useful additions for the dungeon, combing through its pages with a sharp eye for anything offering decent cost-effectiveness. Naturally, most of the wares listed were grotesque instruments designed to tear flesh and splinter bone; in this business, the greater the agony and despair an item inflicted, the higher its price skyrocketed. But since my requirements differed fundamentally from the average Dungeon Master's, there was no reason to squander coin on high-end slaughter tools.
For instance... yes, something like an exceptionally non-violent breed among these tentacle-type monsters.
"These low-tier tentacle monsters listed here—do they truly refrain from cannibalism and eating humans?"
"Well, yes. When you mass-produce them in breeding farms, defective specimens like that crop up from time to time. Their aggression and physical strength are practically nonexistent, so they get weeded out in territory disputes with normal breeds... Because of that, they've adapted to draw sustenance by absorbing salt from sweat lingering on skin rather than consuming flesh and bone."
"Oho. They don't eat people, just the droplets of sweat on the surface...?"
"Don't tell me you're actually planning to order those? Come on, no matter how cheap they are, that's ridiculous. At best, they just slurp up salty water. Normally, they're only sold as cheap live fodder for carnivores that prefer wriggling prey."
"A lack of violence is actually far better suited for this dungeon. Could I get a sample to examine?"
"...Fine, whatever. It's not like they're selling anyway."
Shortly after placing the request, Lufo returned with a writhing cluster of tentacles.
In girth and size, it looked no different from an ordinary tentacle monster, but its sluggish, undulating motions lacked even an ounce of the savage bloodlust typical of man-eating beasts. Usually, a tentacle creature would drag its prey into an acidic maw to dissolve it alive or shred flesh to ribbons with hundreds of needle-like teeth lined down its central gullet... Yet this specimen, having survived purely on sweat, showed none of that ferocity.
"You said their staple diet is saltwater?"
"Yes, though what they love most is bodily sweat from living creatures. In the wild, they usually lie in wait for frail travelers, ensnare them just long enough to lick the sweat off their skin, and then scurry away."
"Oho, is that so?"
Kyuu, kyuuu.
The tentacle creature squirmed before me, letting out a soft, plaintive squeak. Intrigued by its unexpectedly docile cry, I tentatively rested a hand on its rubbery flesh.
"Let's see here... The surface is smooth and pleasantly firm... Hey little guy, can you give me a hand?"
Kyuu.
"There's a good boy. Looking at you up close, you're actually kind of adorable."
Kyuu, kyuuu~
Perhaps its low aggression made it naturally fond of people, or perhaps it was simply thrilled to encounter someone who treated it gently amidst the harsh conditions of the Demon King's Army. Either way, taming it wouldn't pose the slightest challenge.
Just as I reached that conclusion, Lufo pouted and threw a skeptical glance my way.
"So, what on earth do you intend to use this thing for? From the way you're talking, it sounds like another trap."
"I can't say for sure whether it will work as intended yet, so we'll need to run a test trial first. On that note, Lufo, would you mind lending me a hand?"
"...You're not planning something weird again, are you?"
"Something weird? When have I ever done anything weird?"
"Hah! Look at you playing dumb! Do you think I've only been tricked by you once or twice?!"
Lufo shrieked in horror, hastily wrapping her arms around her voluptuous, indecently curved body. She still seemed thoroughly repulsed by the idea of being taken by me, but since her profits were directly tied to my success, this was an offer she couldn't afford to decline.
"When we signed our exclusive contract, you agreed to cooperate wherever feasible. If I can't repay my debt, your internal performance review at the merchant guild will tank. Are you truly fine with that?"
"Th-That's true, but..."
"Think carefully, Lufo. If this test succeeds, I might purchase that entire dead inventory your company can't get rid of in bulk. Selling hit products is fine and dandy, but taking unsellable surplus and transforming it into a high-value commodity—isn't that the mark of a truly capable merchant?"
"Ugh, dammit! Fine! I'll do it, alright?! I'm actually curious to see what grand scheme you could possibly cook up with a useless lump like that anyway..."
Perfect. That secured my test subject.
After asking Lufo to wait while I made preparations, I retreated into the workshop. There, I subjected the sample creature to various alchemical adjustments, tailoring its biology so it would function as a proper erotic trap.
When I finally emerged with the remodeled tentacle monster, Lufo's eyes went wide with pure astonishment.
"I-Its color changed..."
"A delicate pink gives it a far more lewd aesthetic, wouldn't you say?"
"...And it's secreting some kind of slimy fluid, too."
"I fed it a specialized nutrient paste to make it naturally secrete lotion. It's wonderfully slippery yet pleasantly thick, so it feels exquisite when it wraps around its prey~"
My tentacle friend curled a gooey appendage affectionately around my fingers. Still, confronted with a creature that now openly leaked viscous lubricant, Lufo's face twisted in clear disgust.
"I don't suppose it's too late to back out now...?"
"Good grief, it's not like you're going to die or lose a limb, so why be such a scaredy-cat? Come on now, strip out of those clothes, and drink down this draft in one gulp."
"Stripping is one thing... but do I really have to drink that potion?"
"The experiment will yield far better data if you do. Come on, bottoms up~!"
"...Haah. What sin did I commit in a past life to get tangled up with a man like this?"
Sighing in defeat, Lufo downed the potion I handed her, then peeled away her professional business attire layer by layer. When she finally stood stark naked before me, a rosy flush was already creeping up her cheeks as the heat bloomed from deep within her core.
"Ngh, my body is getting hot... You slipped me another strange aphrodisiac, didn't you?"
"Just a mild arousal draft. Compared to what I used on you before, the potency is negligible. At most, it'll cause a faint throb in your sweet spots and work up a light sweat."
"If it's only that much, I can bear with it... Whoa?!"
Just as she was complaining about the rising warmth, our tentacle friend slithered toward her. Lufo gasped in fright at its sudden advance, but before she could retreat, slick appendages were already creeping across her bare skin.
"Wh-What's wrong with this thing all of a sudden?! Get off me!"
"Ah, just stay completely still. Right now is the critical moment."
"Stay still?! Can't you see this monster wrapping around me?!"
"It doesn't even have teeth to bite you with anyway. All it wants is the sweat beading on your skin, so just relax and watch what it does."
"...Damn it all, it's easy for you to say when it's not happening to you!"
Resigned to her fate, Lufo froze in place and allowed the tentacle creature to touch her. Finding her calm, the appendages began gliding over her flesh, eagerly lapping up the sheen of perspiration coating her skin. Soon, seeking to feed more thoroughly, the creature wound its thick coils firmly around her limbs.
"Ngh...! H-Hey, Bertin, you're absolutely sure this thing won't eat me alive, right?! The second this gets dangerous, I'm smashing it to pieces...!"
"I told you not to worry. Have you ever seen me kill anyone?"
As I always say, the goal of this dungeon isn't despair and mortal terror, but the delicious psychological disarray born of shame and overwhelming pleasure. Naturally, even after its modifications, this tentacle friend remained strictly within the realm of erotica; its lethal capacity was functionally zero.
Yes, the only thing that mattered was how much shame and lewd embarrassment those tentacles could coax out of her.
"Ngh... aah...♥"
Coated in thick, viscous lotion, the appendages caressed every sensitive contour of her mildly aroused body. The suction cups slurped greedily against her skin, drawing out her sweat, and that persistent vacuum stimulation seemed to hit her sweet spots with pinpoint precision, coaxing a breathy, sultry moan from between her lips.
"Ah, haah... It feels like... it's sucking so hard... Nnnh~♥"
"Oho, marvelous. What a stunning sight. This is quite the masterpiece..."
"Haah... Don't... don't stare at me like that... ngh♥"
"How could I look away? When a woman treats me to a live tentacle show with such a depraved, slutty body, I wouldn't be much of a man if I averted my eyes, would I?"
"Stop calling me... depraved...! Ah, aahn~♥"
With every passing second, the coils tightened around her. Of course, because of the copious amounts of lotion the creature secreted, the pressure never reached painful levels; instead, that squishy, yielding softness provided the perfect degree of stimulation, effortlessly generating waves of erotic pleasure.
"Ngh, ah... Where do you think... you're touching... W-Wait, mmph~~♥"
Perhaps unsettled by the tentacles brushing against increasingly intimate zones, Lufo began to struggle. In response, our tentacle friend promptly slipped a slender tendril straight into her parted lips, thoroughly exploring every corner of her oral cavity like a phallus sliding into her mouth.
"Mmph, nnh, mmgh~♥"
She gasped for breath around the intrusive invader, but the tentacle—busily sliding in and out while greedily absorbing her pooling saliva—possessed no concept of restraint.
"During my experiments, I noticed it reacts very sensitively to the source of sounds. So I trained it to plug whatever mouth makes noise. It immobilizes the intruder and caters to a very specific fetish—not a bad trap design, wouldn't you say?"
"Mmh, pff, mmgh~♥ *Gasp!* Y-You should have warned me about that beforehand...! Ah, aahhh~♥"
She barely managed to spit the tentacle out before the other coils wound around her thighs, prying her legs wide apart. Slowly, deliberately, a slick tip reached toward the secret cleft nestled between her thighs.
"H-Hiiieek! N-No! You can't put it in th-there...!"
"Don't panic. The creature lacks the physical strength to pry open your maidenhood anyway. All it's after is the arousal nectar dripping from your folds."
Indeed—if its diet consisted primarily of sweat, then depending on how it was conditioned, it could be trained to view any bodily fluid as food. To this creature, the sweet nectar flowing from her swollen, heat-drenched slit was every bit as tempting as the saliva in her mouth.
Yet without the brute force required to penetrate her entrance, all it could do was rub against the sensitive exterior and lick greedily at her folds.
"Ah, hah, aah~♥ N-No, don't touch there...♥"
Slurp, squelch~
"Ngh, haah, ahh~♥ Th-This feels so weird... B-Bertin. Is this... is this really working the way you wanted?"
"Yes, extraordinarily well. It's painting a picture far more erotic than I dared imagine."
"Nnnh, ahh~♥ Then the test is over, right?! Stop just watching and help me! I'm wrapped up so tightly... my strength is just draining away... Haah, ngh~♥"
Good, very good. It seemed the mild enervating agent blended into the secreted lotion was taking full effect. Entangled in those slick coils, she had no choice but to lie there helpless while her juices were sucked dry.
Granted, the weakening secretion was the sort of mild toxin that victims quickly developed a tolerance to, meaning an adventurer could break free before long—but that exact ambiguity made it ideal for steadily harvesting pure negative emotional energy over an extended struggle.
And setting that aside... Haah. Watching this play out before my eyes was pushing my patience past its limit.
"Haah... B-Bertin? What are you...♥"
"My apologies, Lufo. I intended to wrap up the experiment here, but watching you look so devastatingly lewd got my cock standing at full attention."
"D-Don't put it in! Ah, no, stop...♥"
Squelch.
Without hesitation, my shaft slid smoothly into her depths. As if her body had already memorized my girth from our previous encounters, her drenched passage parted eagerly, welcoming my cock like a custom lock yielding to the right key.
"Phew... Your pussy really is exquisite, Lufo. Tight, dripping wet, practically engineered to bring a man to absolute bliss... It's worth pounding into over and over again."
"Haah, ah, ngh...! Th-This has nothing to do with the experiment...♥ Ha, aahn~♥"
"The experiment is important, but relieving my lust is equally essential business. Since we've come this far, why not cooperate until the very end?"
"I never... agreed to cooperate like this...! Ah, aahhh~♥ N-Not that spot, don't thrust theeeeere~♥"
Plop, squelch, plop.
Lufo's hips jerked with every thrust, wet moans spilling uncontrollably from her lips. Meanwhile, as the friction drove her body temperature higher, her skin glistened with a fresh sheen of perspiration, prompting the surrounding tentacles to suck even more voraciously at her sensitive flesh.
Every simultaneous stimulation pushed her arousal past the point of no return.
"A-Aahh~♥ N-No, don't suck there, my nipples are too sensiti...♥"
Chuuuup, slurp~
"Ah, aaahn~♥ D-Don't, please, st-stop... Hiiieee~♥"
Haah, her cries were turning filthier by the second. Did she have any idea just how shamelessly degraded she looked right now?
"Lufo."
Feeling a delicious sadism swell within my chest as I drove into her trembling frame, I leaned in and whispered in her ear.
"Are you ashamed right now?"
"Wh-What are you... Ah, aahhh~♥"
I gave my hips a grinding twist, sending a jolt through her core that made her lower back violently shudder. When her teary gaze met mine, the realization of her own pathetic state seemed to hit her, and her face flushed crimson as she desperately averted her eyes.
"D-Don't look at me! Ah, aahn~♥"
"Oh, but I am looking, Lufo. I'm looking right at you—stripped bare without a shred of dignity, helpless and limp, panting like a bitch in heat around my cock."
"N-No, I'm... I'm not a slutty woman..."
Smack, smack!
"A-Ahhn, haaaah~♥ D-Don't go so fast all of a sudden...! Ah, ooh, aahn~♥"
Even as shame consumed her mind, her body couldn't resist the cresting tide of pleasure, her eyes rolling back into her head. Feeling her inner walls clamp down on me with desperate spasms, I knew the time had come and drove my shaft to the absolute hilt.
With a hot, pulsing burst, a torrent of thick white seed flooded her womb.
"Aah, aaahhhn~~~~♥♥♥"
Her limbs locked stiff as she shattered into an explosive climax, fine tremors wracking her entire frame. I held her tight, emptying every last drop into her depths before slowly pulling free.
Drip, trickle. Thick ribbons of my seed spilled from her gaping entrance, tracing milky lines down her thighs—an undeniable testament to her absolute conquest.
To top off the spectacle, the tentacle creature slithered closer, eagerly lapping up the overflow of sticky fluid. A deep sense of triumph washed over me. I planted a gentle, mocking kiss on her completely exhausted cheek and smiled.
"Well, Lufo? Don't you think this trap will be quite useful?"
"Haah... Y-You... You really are the most spiteful bastard alive...♥"
Her venomous mutter was proof enough of how thoroughly her pride had been battered. Yet noting that the spite in her voice was noticeably softer than before, I grinned, confident that her conditioning was progressing smoothly.
"I'd like to place an order for ten more specimens identical to this sample. We'll run a pilot program inside the dungeon, and if they perform well, I'll order a much larger batch."
Yes, she had no choice but to accept.
"Th-Thank you for your order... valued customer...♥"
Because the more deeply she was humiliated by my depraved games...
...the fatter her corporate commission grew.
Over the next few days, I steadily reinforced the dungeon's defensive lineup, fine-tuning traps and shoring up weak spots.
Just when the facility was finally ready to welcome fresh intruders, however, I ran headfirst into an entirely unexpected and fatal snag.
Namely, the new recruit who had recently joined our dungeon roster—a rookie succubus—was staging an outright work strike.
"I refuse!! I don't care if it's an order from my employer, I'm not doing it!"
"Hey, brat. I let your earlier blunders slide, and now you think you can walk all over me? I took out a loan just to pay your wages, and you have the nerve to refuse work...?!"
"That's my line! You scouted top-tier talent like me, and this is the trash assignment you give me?! I'm utterly disappointed in you, Master!"
Despite my firm reprimands, the damn succubus brat dug her heels in with absolute stubbornness. Seeing that her obstinacy wasn't going to break easily, I let out a heavy sigh and decided to at least hear her out.
"Fine, let's hear it. Why the hell are you refusing to seduce and drain the male adventurers who invade this dungeon?"
I hired you specifically because I don't want to see men's backdoors getting violated by my traps, you little brat.
If you refuse to do even that, what the fuck is your purpose in this dungeon?!